Boiler for incubator heaters



D. M. HOLBROOK.

BOILER FOR INCUBATOR HEATERS.

APPLICATION FILED JAN.22, 1920.

Patented May 30, 1922.

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DAVID M. HOLBROOK, or PORTLAND, OREGON.

BOILER FOR incuna'i'on nna'rn as.

Specification of Letters Patent.

Patented May 30,1922.

Application filed January 22, 1920. Serial No. 353,258.

} To all whom it may concern:

' lowing to be a full, clear, and exact description of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to improvements in water boilers and more particularly to one intended primarily for use in connection with incubators although not restricted to this particular field, the principal object of the invention being'to provide an improved form oi boiler which may be easily and inexpensively manufactured, yet one. which will be highly eflicient and desirable, novel provision being made whereby an unusually great area is exposed to heat from any suitable source.

With the foregoing in view, the invention resides in the novel boiler construction hereinafter fully described and claimed and shown in the accompanying drawing. Figure 1 is a perspective view of a boiler constructed in accordance with my invention. Figure 2 is a horizontal sectional view of the boiler.

In the drawing; above briefly described, the numeral 20 designates the boiler as a whole. This boiler includes a central hollow cylinder 25 provided with vertically spaced horizontal flanges 26 of annular term, each of these flanges being provided with a series of tongues 27 extending radially. Two fluted sheets 28 are each formed into an arcuate series of flutes and the ends of these flutes are united with the tongues 27 by The flutes of the which they are closed. sheets 28 are spaced from the outer surface ol' the cylinder 25 to provide a passage .26

around the cylinder which communicateswardly from the latter, and these pipes ,arein open communication with the space 26,-

by means of openings 30 and 31 The ends of'the pipes 30 and 31 are soldered or other.- wise secured to the flanges 26 and the intermediate portions of these pipes are secured the fluted sheets28 so that the flanges 26,

flutes '28 and pipes 30 and 31', are combined I r and united ,withthe cylinder 25 to form a receptacle for the water to be heated. suitable source or heat may be employed and it preferably supplies heat upwardly through the'cylinder 25 and through the spaces be-' tween the outer sides of the flutes of the sheets-'28, and due to the great amount of water within the boiler heated.

pipe 31 may be connected with any desired part,for. instance a heating coil of an incubator. lVhen the boiler is used'in connection with incubators, brooders or the like, and the pipe 31 discharges into one end of the heating coil, the other end of this coil communicates with the pipe 30 so that the boiler will produce" a continual circulation of hot water; I I

Since excellent results have been obtained from the details disclosed, they are pref-era bly followed. 1 wish it understood however i diametrically Opposite side thereof. both of i said pipes being outside of said cylinder and extending longitudinally thereotya pair of fluted sheets both secured along one of their edges to one of said pipes and each secured along its opposite edge to the other pipe, said sheets extending arcuately around opposite halves of said cyhnder mspaced relation therewith, and end plates secured to the ends Any v area which is'thus exposed to the heat, the! Will be rapidly I y Any suitable watersuplply means may communicate with the pipe 30 and the "'0' of said fluted sheets'and said cylinder and I forming therewith a water chamber, said pipes having openingscommunicating with said chamber.

In testimony whereof I have hereunto set hi my hand. i

. DAVID M. HOLBROOK.

55' p by soldering or other means to the ends of I 

